1
|
Song Z, Wang X, Liu X, Luo Y, Qiu J, Yin A, Liu Y, Yi H, Xiao Z, Li A. Targeting of Annexin A1 in Tumor-associated Macrophages as a therapeutic strategy for hepatocellular carcinoma. Biochem Pharmacol 2023; 213:115612. [PMID: 37209858 DOI: 10.1016/j.bcp.2023.115612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/15/2023] [Accepted: 05/15/2023] [Indexed: 05/22/2023]
Abstract
Hepatocellular carcinoma (HCC) is a common aggressive, malignant tumor with limited treatment options. Currently, immunotherapies have low success rates in the treatment of HCC. Annexin A1 (ANXA1) is a protein related to inflammation, immunity and tumorigenesis. However, the role of ANXA1 in liver tumorigenesis remains unknown. Therefore, we sought to explore the feasibility of ANXA1 as a therapeutic target for HCC. Here, we analyzed ANXA1 expression and localization by HCC microarray and immunofluorescence experiments. Using an in vitro culture system, monocytic cell lines and primary macrophages were employed to investigate the biological functions of cocultured HCC cells and cocultured T cells. In vivo, Ac2-26, human recombinant ANXA1 (hrANXA1), and cell depletion (macrophages or CD8 + T cells) experiments were further conducted to investigate the role of ANXA1 in the tumor microenvironment (TME). We found that ANXA1 was overexpressed in mesenchymal cells, especially macrophages, in human liver cancer. Moreover, the expression of ANXA1 in mesenchymal cells was positively correlated with programmed death-ligand 1 expression. Knockdown of ANXA1 expression inhibited HCC cell proliferation and migration by increasing the M1/M2 macrophage ratio and promoting T-cell activation. hrANXA1 promoted malignant growth and metastasis in mice by increasing the infiltration and M2 polarization of tumor-associated macrophages (TAMs), generating an immunosuppressive TME and suppressing the antitumor CD8 + T-cell response. Together, our findings reveal that ANXA1 may be an independent prognostic factor for HCC and demonstrate the clinical translational significance of ANXA1 for tumor immunotherapy in HCC.
Collapse
Affiliation(s)
- Zhenghui Song
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China; Research Center of Carcinogenesis and Targeted Therapy, Xiangya Hospital, Central South University, Changsha 410008, China; National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China; Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China
| | - Xue Wang
- Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xinhui Liu
- Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yue Luo
- Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jieya Qiu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China; Research Center of Carcinogenesis and Targeted Therapy, Xiangya Hospital, Central South University, Changsha 410008, China; National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Aiqi Yin
- Department of Obstetrics, Shenzhen Maternity and Child Healthcare Hospital, The First School of Clinical Medicine, Southern Medical University, Shenzhen, Guangdong 518028, China
| | - Yun Liu
- Department of Endocrinology and Metabolic Diseases, Affiliated Hospital (Clinical College) of Xiangnan University, Chenzhou 423000, China
| | - Hong Yi
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China; Research Center of Carcinogenesis and Targeted Therapy, Xiangya Hospital, Central South University, Changsha 410008, China; National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Zhiqiang Xiao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha 410008, China; Research Center of Carcinogenesis and Targeted Therapy, Xiangya Hospital, Central South University, Changsha 410008, China; National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China.
| | - Aimin Li
- Department of Hepatology, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China.
| |
Collapse
|
2
|
Mayavannan A, Shantz E, Haidl ID, Wang J, Marshall JS. Mast cells selectively produce inflammatory mediators and impact the early response to Chlamydia reproductive tract infection. Front Immunol 2023; 14:1166068. [PMID: 37138882 PMCID: PMC10150091 DOI: 10.3389/fimmu.2023.1166068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/28/2023] [Indexed: 05/05/2023] Open
Abstract
Introduction Chlamydia trachomatis (C. trachomatis) is a Gram-negative obligate intracellular bacterium that causes reproductive tract complications in women, including ectopic pregnancies and tubal factor infertility. We hypothesized that mast cells, which are common at mucosal barriers, may contribute to responses to Chlamydia infection and aimed to define human mast cell responses to C. trachomatis. Methods Human cord blood-derived mast cells (CBMCs) were exposed to C. trachomatis to assess bacterial uptake, mast cell degranulation, gene expression, and production of inflammatory mediators. The role of formyl peptide receptors and Toll-like receptor 2 (TLR2) were investigated using pharmacological inhibitors and soluble TLR2. Mast cell-deficient mice and littermate controls were used to examine the in vivo role of mast cells in influencing the immune response to Chlamydia infection in the female reproductive tract. Results C. trachomatis bacteria were taken up by human mast cells but did not replicate efficiently inside CBMCs. C. trachomatis-activated mast cells did not degranulate but maintained viability and exhibited cellular activation with homotypic aggregation and upregulation of ICAM-1. However, they significantly enhanced the gene expression of IL1B, CCL3, NFKB1, CXCL8, and IL6. Inflammatory mediators were produced, including TNF, IL-1β, IL-1RA, IL-6, GM-CSF, IL-23, CCL3, CCL5, and CXCL8. Endocytic blockade resulted in reduced gene expression of IL6, IL1B, and CCL3, suggesting C. trachomatis induced mast cell activation in both extracellular and intracellular locations. The IL-6 response to C. trachomatis was reduced when CBMCs were treated with C. trachomatis coated with soluble TLR2. Mast cells derived from TLR2-deficient mice also demonstrated a reduced IL-6 response to C. muridarum. Five days following C. muridarum infection, mast cell-deficient mice showed attenuated CXCL2 production and significantly reduced numbers of neutrophils, eosinophils, and B cells in the reproductive tract when compared with mast cell-containing littermates. Discussion Taken together, these data demonstrate that mast cells are reactive to Chlamydia spp. through multiple mechanisms that include TLR2-dependent pathways. Mast cells also play an important role in shaping in vivo immune responses in Chlamydia reproductive tract infection through both effector cell recruitment and modification of the chemokine microenvironment.
Collapse
Affiliation(s)
- Animamalar Mayavannan
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Emily Shantz
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Ian D. Haidl
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
| | - Jun Wang
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
- Canadian Center for Vaccinology, Izaak Walton Killam (IWK) Health Centre, Halifax, NS, Canada
| | - Jean S. Marshall
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS, Canada
- Department of Pathology, Dalhousie University, Halifax, NS, Canada
- *Correspondence: Jean S. Marshall,
| |
Collapse
|
3
|
Batiha GES, Al-Gareeb AI, Elekhnawy E, Al-kuraishy HM. Potential role of lipoxin in the management of COVID-19: a narrative review. Inflammopharmacology 2022; 30:1993-2001. [PMID: 36114383 PMCID: PMC9483298 DOI: 10.1007/s10787-022-01070-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/20/2022] [Indexed: 01/18/2023]
Abstract
Severe acute respiratory syndrome coronavirus (SARS-CoV-2) infection leads to the development of coronavirus disease 2019 (COVID-19), which causes endothelial dysfunction (ED), oxidative stress (OS), and inflammatory disorders. These changes cause hypoxia and cytokine storm with the development of cardio-pulmonary complications. Bioactive lipids and other polyunsaturated fatty acids participate in a vital role in the SARS-CoV-2 infection process. One of these mediators is the anti-inflammatory compound, lipoxin (LX). LXs are produced from arachidonic acid (AA) by collaboration between 5-lipoxygenase (5-LO) and 12–15 LO during cell interactions. Thus, our goal was to review the probable role of LXs in COVID-19 regarding the effects of LXs on the inflammatory signaling pathways that are linked with COVID-19 pathogenesis and complications.
Collapse
Affiliation(s)
- Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511 AlBeheira Egypt
| | - Ali I. Al-Gareeb
- Department of Pharmacology, Toxicology and Medicine, College of Medicine, Al-Mustansiriyah University, Baghdad, 14132 Iraq
| | - Engy Elekhnawy
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Tanta University, Tanta, 31527 Egypt
| | - Hayder M. Al-kuraishy
- Department of Pharmacology, Toxicology and Medicine, College of Medicine, Al-Mustansiriyah University, Baghdad, 14132 Iraq
| |
Collapse
|
4
|
Cui H, Yang Y, Feng M, Gao Y, Li L, Tu W, Chen X, Hao B, Li S, Li D, Chen L, Zhou C, Cao Y. Preoperative neutrophil-to-lymphocyte ratio (preNLR) for the assessment of tumor characteristics in lung adenocarcinoma patients with brain metastasis. Transl Oncol 2022; 22:101455. [PMID: 35598384 PMCID: PMC9126952 DOI: 10.1016/j.tranon.2022.101455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 11/18/2022] Open
Abstract
A relationship between preoperative Neutrophil-to-Lymphocyte ratio (preNLR) and brain metastasis characteristics such as tumor location and peritumoral brain edema is proposed. The corresponding spearman correlations of peritumoral brain edema and preoperative NLR between different tumor location was performed. A prognostic nomogram, that provide survival predictions for brain metastasis on lung adenocarcinoma (LUAD) patients has been established.
Objectives Brain metastases from lung adenocarcinoma cause significant patient mortality. This study aims to evaluate the role of preoperative Neutrophil-to-Lymphocyte ratio (preNLR) in predicting the survival and prognosis of Lung adenocarcinoma (LUAD) patients with brain metastasis (BM) and provide more references for predicting peritumoral edema. Methods We retrospectively reviewed 125 LUAD-BM patients who had undergone surgical resection from December 2015 to December 2020. The clinical characteristic, demographic, MRI data, and preNLR within 24–48 h before craniotomy were collected. Patients were divided into two groups based on preNLR (high NLR and low NLR), with cutoff values determined by receiver operating characteristic (ROC) analysis. Association between preoperative NLR and clinical features was determined by using Pearson chi-squared tests. Uni- and multivariate analyzes were performed to compare the overall survival (OS) of clinical features. Results The patients were divided into NLR-low (64 patients) and NLR-high (61 patients) groups based on receiver operating characteristic analysis of NLR area. According to correlation analysis, a high preNLR (NLR≥2.8) is associated with the both supra- and infratentorial location involved (P = 0.017) and a greater incidence of severe peritumoral edema (P = 0.038). By multivariable analysis, age ≥ 65 years (P = 0.011), KPS < 70 (P = 0.043), elevated preNLR (P = 0.013), extracerebral metastases (P = 0.003), EGFR/ALK+ (P = 0.037), postoperative radiotherapy (P = 0.017) and targeted therapy (P = 0.007) were independent prognostic factors. OS nomogram was constructed based on cox model and model performance was examined (AUC = 0.935). Conclusions PreNLR may serve as a prognosis indicator in LUAD patients with brain metastasis, and high preNLR tends to be positively associate with multiple locations and severe peritumoral edema.
Collapse
|
5
|
Kondo FV, Cabrera WHK, Ribeiro OG, De Franco M, Jensen JR, Picolo G, Sant’Anna MB, Spadafora-Ferreira M, Borrego A, Ibañez OM, Starobinas N. Pain and Cellular Migration Induced by Bothrops jararaca Venom in Mice Selected for an Acute Inflammatory Response: Involvement of Mast Cells. Front Immunol 2022; 12:779473. [PMID: 35185861 PMCID: PMC8854176 DOI: 10.3389/fimmu.2021.779473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 12/13/2021] [Indexed: 11/13/2022] Open
Abstract
Bothrops jararaca venom (BjV) can induce mast cell degranulation. In order to investigate the role of mast cells and the interference of the host genetic background in the inflammation induced by BjV, we have used mouse strains selected for maximal (AIRmax) or minimal (AIRmin) acute inflammatory response (AIR). Mice were pretreated with an inhibitor of mast cell degranulation, cromolyn (CROM), and injected in footpads or intraperitoneally (i.p.) with BjV. Pain was measured with von Frey hairs, cell migration in the peritoneum by flow cytometry, and reactive oxygen species (ROS) production by chemiluminescence assays. The nociceptive response to BjV was higher in AIRmax than AIRmin mice; however, this difference was abolished by pretreatment with CROM. BjV induced peritoneal neutrophil (CD11b+ GR-1+) infiltration and ROS secretion in AIRmax mice only, which were partially inhibited by CROM. Our findings evidence a role for mast cells in pain, neutrophil migration, and ROS production triggered by BjV in AIRmax mice that are more susceptible to the action of BjV.
Collapse
Affiliation(s)
| | | | | | | | | | - Gisele Picolo
- Laboratory of Pain and Signaling, Butantan Institute, São Paulo, Brazil
| | | | | | - Andrea Borrego
- Laboratory Immunogenetics, Butantan Institute, São Paulo, Brazil
| | - Olga M. Ibañez
- Laboratory Immunogenetics, Butantan Institute, São Paulo, Brazil
| | - Nancy Starobinas
- Laboratory Immunogenetics, Butantan Institute, São Paulo, Brazil
- *Correspondence: Nancy Starobinas,
| |
Collapse
|
6
|
Lice I, Sanches JM, Correia-silva RD, Corrêa MP, Icimoto MY, Silva AAR, Sánchez-vinces S, Porcari AM, Moreira V, Gil CD. Effects of Formyl Peptide Receptor Agonists Ac9-12 and WKYMV in In Vivo and In Vitro Acute Inflammatory Experimental Models. Cells 2022; 11:228. [PMID: 35053343 PMCID: PMC8773544 DOI: 10.3390/cells11020228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/16/2021] [Accepted: 01/04/2022] [Indexed: 11/24/2022] Open
Abstract
Formyl peptide receptors (Fprs) are a G-protein-coupled receptor family mainly expressed on leukocytes. The activation of Fpr1 and Fpr2 triggers a cascade of signaling events, leading to leukocyte migration, cytokine release, and increased phagocytosis. In this study, we evaluate the effects of the Fpr1 and Fpr2 agonists Ac9-12 and WKYMV, respectively, in carrageenan-induced acute peritonitis and LPS-stimulated macrophages. Peritonitis was induced in male C57BL/6 mice through the intraperitoneal injection of 1 mL of 3% carrageenan solution or saline (control). Pre-treatments with Ac9-12 and WKYMV reduced leukocyte influx to the peritoneal cavity, particularly neutrophils and monocytes, and the release of IL-1β. The addition of the Fpr2 antagonist WRW4 reversed only the anti-inflammatory actions of WKYMV. In vitro, the administration of Boc2 and WRW4 reversed the effects of Ac9-12 and WKYMV, respectively, in the production of IL-6 by LPS-stimulated macrophages. These biological effects of peptides were differently regulated by ERK and p38 signaling pathways. Lipidomic analysis evidenced that Ac9-12 and WKYMV altered the intracellular lipid profile of LPS-stimulated macrophages, revealing an increased concentration of several glycerophospholipids, suggesting regulation of inflammatory pathways triggered by LPS. Overall, our data indicate the therapeutic potential of Ac9-12 and WKYMV via Fpr1 or Fpr2-activation in the inflammatory response and macrophage activation.
Collapse
|
7
|
Qin B, Peng Y, Zhong C, Cai Y, Zhou S, Chen H, Zhuang J, Zeng H, Xu C, Xu H, Li J, Ying G, Gu C, Chen G, Wang L. Mast Cells Mediate Inflammatory Injury and Aggravate Neurological Impairment in Experimental Subarachnoid Hemorrhage Through Microglial PAR-2 Pathway. Front Cell Neurosci 2021; 15:710481. [PMID: 34646122 PMCID: PMC8503547 DOI: 10.3389/fncel.2021.710481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 08/19/2021] [Indexed: 11/30/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) is a devastating cerebrovascular disease with high mortality and disability. Aberrant neuroinflammation has been identified as a critical factor accounting for the poor prognosis of SAH patients. Mast cells (MCs), the sentinel cells of the immune system, play a critical in the early immune reactions and participate in multiple pathophysiological process. However, the exact role of MCs on the pathophysiological process after SAH has not been fully understood. The current study was conducted to determine the role of MCs and MC stabilization in the context of SAH. Mouse SAH model was established by endovascular perforation process. Mice received saline or cromolyn (MC stabilizer) or compound 48/80 (MCs degranulator). Post-SAH evaluation included neurobehavioral test, western blot, immunofluorescence, and toluidine blue staining. We demonstrated that SAH induced MCs activation/degranulation. Administration of MC stabilizer cromolyn conferred a better neurologic outcome and decreased brain edema when compared with SAH+vehicle group. Furthermore, cromolyn significantly inhibited neuroinflammatory response and alleviated neuronal damage after SAH. However, pharmacological activation of MCs with compound 48/80 dramatically aggravated SAH-induced brain injury and exacerbated neurologic outcomes. Notably, pharmacological inhibition of microglial PAR-2 significantly reversed MCs-induced inflammatory response and neurological impairment. Additionally, the effect of MCs-derived tryptase in mediating neuroinflammation was also abolished by the microglial PAR-2 blockage in vitro. Taken together, MCs yielded inflammatory injury through activating microglia-related neuroinflammation after SAH. These data shed light on the notion that MCs might be a novel and promising therapeutic target for SAH.
Collapse
Affiliation(s)
- Bing Qin
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Yucong Peng
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Chen Zhong
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Yong Cai
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Shengjun Zhou
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Huaijun Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Jianfeng Zhuang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Hanhai Zeng
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Chaoran Xu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Hangzhe Xu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Jianru Li
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Guangyu Ying
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Chi Gu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Gao Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Lin Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
8
|
Siegel ER, Croze RH, Fang X, Matthay MA, Gotts JE. Inhibition of the lipoxin A4 and resolvin D1 receptor impairs host response to acute lung injury caused by pneumococcal pneumonia in mice. Am J Physiol Lung Cell Mol Physiol 2021; 320:L1085-L1092. [PMID: 33822656 DOI: 10.1152/ajplung.00046.2021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Resolution of the acute respiratory distress syndrome (ARDS) from pneumonia requires repair of the injured lung endothelium and alveolar epithelium, removal of neutrophils from the distal airspaces of the lung, and clearance of the pathogen. Previous studies have demonstrated the importance of specialized proresolving mediators (SPMs) in the regulation of host responses during inflammation. Although ARDS is commonly caused by Streptococcus pneumoniae, the role of lipoxin A4 (LXA4) and resolvin D1 (RvD1) in pneumococcal pneumonia is not well understood. In the present experimental study, we tested the hypothesis that endogenous SPMs play a role in the resolution of lung injury in a clinically relevant model of bacterial pneumonia. Blockade of formyl peptide receptor 2 (ALX/FPR2), the receptor for LXA4 and RvD1, with the peptide WRW4 resulted in more pulmonary edema, greater protein accumulation in the air spaces, and increased bacteria accumulation in the air spaces and the blood. Inhibition of this receptor was also associated with decreased levels of proinflammatory cytokines. Even in the presence of antibiotic treatment, WRW4 inhibited the resolution of lung injury. In summary, these experiments demonstrated two novel findings: LXA4 and RvD1 contribute to the resolution of lung injury due to pneumococcal pneumonia, and the mechanism of their benefit likely includes augmenting bacterial clearance and reducing pulmonary edema via the restoration of lung alveolar-capillary barrier permeability.
Collapse
Affiliation(s)
- Emily R Siegel
- School of Medicine, University of California, San Francisco, California
| | - Roxanne H Croze
- Cardiovascular Research Institute, University of California, San Francisco, California
| | - Xiaohui Fang
- Cardiovascular Research Institute, University of California, San Francisco, California
| | - Michael A Matthay
- Cardiovascular Research Institute, University of California, San Francisco, California.,Department of Medicine, Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California, San Francisco, California.,Department of Anesthesia and Perioperative Care, University of California, San Francisco, California
| | - Jeffrey E Gotts
- Cardiovascular Research Institute, University of California, San Francisco, California.,Department of Medicine, Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California, San Francisco, California.,Department of Anesthesia and Perioperative Care, University of California, San Francisco, California
| |
Collapse
|
9
|
Grewal T, Rentero C, Enrich C, Wahba M, Raabe CA, Rescher U. Annexin Animal Models-From Fundamental Principles to Translational Research. Int J Mol Sci 2021; 22:ijms22073439. [PMID: 33810523 PMCID: PMC8037771 DOI: 10.3390/ijms22073439] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 02/07/2023] Open
Abstract
Routine manipulation of the mouse genome has become a landmark in biomedical research. Traits that are only associated with advanced developmental stages can now be investigated within a living organism, and the in vivo analysis of corresponding phenotypes and functions advances the translation into the clinical setting. The annexins, a family of closely related calcium (Ca2+)- and lipid-binding proteins, are found at various intra- and extracellular locations, and interact with a broad range of membrane lipids and proteins. Their impacts on cellular functions has been extensively assessed in vitro, yet annexin-deficient mouse models generally develop normally and do not display obvious phenotypes. Only in recent years, studies examining genetically modified annexin mouse models which were exposed to stress conditions mimicking human disease often revealed striking phenotypes. This review is the first comprehensive overview of annexin-related research using animal models and their exciting future use for relevant issues in biology and experimental medicine.
Collapse
Affiliation(s)
- Thomas Grewal
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia;
- Correspondence: (T.G.); (U.R.); Tel.: +61-(0)2-9351-8496 (T.G.); +49-(0)251-83-52121 (U.R.)
| | - Carles Rentero
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain; (C.R.); (C.E.)
- Centre de Recerca Biomèdica CELLEX, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Carlos Enrich
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain; (C.R.); (C.E.)
- Centre de Recerca Biomèdica CELLEX, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Mohamed Wahba
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia;
| | - Carsten A. Raabe
- Research Group Regulatory Mechanisms of Inflammation, Center for Molecular Biology of Inflammation (ZMBE) and Cells in Motion Interfaculty Center (CiM), Institute of Medical Biochemistry, University of Muenster, 48149 Muenster, Germany;
| | - Ursula Rescher
- Research Group Regulatory Mechanisms of Inflammation, Center for Molecular Biology of Inflammation (ZMBE) and Cells in Motion Interfaculty Center (CiM), Institute of Medical Biochemistry, University of Muenster, 48149 Muenster, Germany;
- Correspondence: (T.G.); (U.R.); Tel.: +61-(0)2-9351-8496 (T.G.); +49-(0)251-83-52121 (U.R.)
| |
Collapse
|
10
|
Ansari J, Senchenkova EY, Vital SA, Al-Yafeai Z, Kaur G, Sparkenbaugh EM, Orr AW, Pawlinski R, Hebbel RP, Granger DN, Kubes P, Gavins FNE. Targeting the AnxA1/Fpr2/ALX pathway regulates neutrophil function, promoting thromboinflammation resolution in sickle cell disease. Blood 2021; 137:1538-1549. [PMID: 33512489 PMCID: PMC7976506 DOI: 10.1182/blood.2020009166] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 12/28/2020] [Indexed: 12/19/2022] Open
Abstract
Neutrophils play a crucial role in the intertwined processes of thrombosis and inflammation. An altered neutrophil phenotype may contribute to inadequate resolution, which is known to be a major pathophysiological contributor of thromboinflammatory conditions such as sickle cell disease (SCD). The endogenous protein annexin A1 (AnxA1) facilitates inflammation resolution via formyl peptide receptors (FPRs). We sought to comprehensively elucidate the functional significance of targeting the neutrophil-dependent AnxA1/FPR2/ALX pathway in SCD. Administration of AnxA1 mimetic peptide AnxA1Ac2-26 ameliorated cerebral thrombotic responses in Sickle transgenic mice via regulation of the FPR2/ALX (a fundamental receptor involved in resolution) pathway. We found direct evidence that neutrophils with SCD phenotype play a key role in contributing to thromboinflammation. In addition, AnxA1Ac2-26 regulated activated SCD neutrophils through protein kinase B (Akt) and extracellular signal-regulated kinases (ERK1/2) to enable resolution. We present compelling conceptual evidence that targeting the AnxA1/FPR2/ALX pathway may provide new therapeutic possibilities against thromboinflammatory conditions such as SCD.
Collapse
Affiliation(s)
- Junaid Ansari
- Department of Molecular and Cellular Physiology
- Department of Neurology, and
| | | | | | - Zaki Al-Yafeai
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA
| | | | - Erica M Sparkenbaugh
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - A Wayne Orr
- Department of Molecular and Cellular Physiology
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA
| | - Rafal Pawlinski
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Robert P Hebbel
- Department of Medicine, University of Minnesota Medical School, Minneapolis, MN
| | | | - Paul Kubes
- Departments of Physiology and Pharmacology, Microbiology and Immunology and Critical Care Medicine, Snyder Institute for Chronic Disease, University of Calgary, Calgary, AB, Canada; and
| | - Felicity N E Gavins
- Department of Molecular and Cellular Physiology
- Department of Neurology, and
- Department of Life Sciences, Brunel University London, United Kingdom
| |
Collapse
|
11
|
Camba-Gómez M, Gualillo O, Conde-Aranda J. New Perspectives in the Study of Intestinal Inflammation: Focus on the Resolution of Inflammation. Int J Mol Sci 2021; 22:ijms22052605. [PMID: 33807591 PMCID: PMC7962019 DOI: 10.3390/ijms22052605] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/25/2021] [Accepted: 03/02/2021] [Indexed: 12/14/2022] Open
Abstract
Inflammation is an essential physiological process that is directed to the protection of the organism against invading pathogens or tissue trauma. Most of the existing knowledge related to inflammation is focused on the factors and mechanisms that drive the induction phase of this process. However, since the recognition that the resolution of the inflammation is an active and tightly regulated process, increasing evidence has shown the relevance of this process for the development of chronic inflammatory diseases, such as inflammatory bowel disease. For that reason, with this review, we aimed to summarize the most recent and interesting information related to the resolution process in the context of intestinal inflammation. We discussed the advances in the understanding of the pro-resolution at intestine level, as well as the new mediators with pro-resolutive actions that could be interesting from a therapeutic point of view.
Collapse
Affiliation(s)
- Miguel Camba-Gómez
- Molecular and Cellular Gastroenterology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain;
| | - Oreste Gualillo
- SERGAS (Servizo Galego de Saúde) and IDIS (Instituto de Investigación Sanitaria de Santiago), The NEIRID Lab (Neuroendocrine Interactions in Rheumatology and Inflammatory Diseases), Research Laboratory 9, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain;
| | - Javier Conde-Aranda
- Molecular and Cellular Gastroenterology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain;
- Correspondence: ; Tel.: +34-981-955-091
| |
Collapse
|
12
|
Xu J, Yu C, Luo J, Guo Y, Cheng C, Zhang H. The role and mechanism of the annexin A1 peptide Ac2-26 in rats with cardiopulmonary bypass lung injury. Basic Clin Pharmacol Toxicol 2021; 128:719-730. [PMID: 33455036 PMCID: PMC8247988 DOI: 10.1111/bcpt.13561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 12/31/2020] [Accepted: 01/12/2021] [Indexed: 11/30/2022]
Abstract
The main causes of lung injury after cardiopulmonary bypass (CPB) are systemic inflammatory response syndrome (SIRS) and pulmonary ischaemia‐reperfusion injury (IR‐I). SIRS and IR‐I are often initiated by a systemic inflammatory response. The present study investigated whether the annexin A1 (ANX‐A1) peptidomimetic Ac2‐26 by binding to formyl peptide receptors (FPRs) inhibit inflammatory cytokines and reduce lung injury after CPB. Male rats were randomized to the following five groups (n = 6, each): sham, exposed to pulmonary ischaemic‐reperfusion (IR‐I), IR‐I plus Ac2‐26, IR‐I plus the FPR antagonist, BoC2 (N‐tert‐butyloxycarbonyl‐Phe‐Leu‐Phe‐Leu‐Phe) and IR‐I plus Ac2‐26 and BoC2. Treatment with Ac2‐26 improved the oxygenation index, an effect blocked by BoC2. Histopathological analysis of the lung tissue revealed that the degree of lung injury was significantly less (P < 0.05) in the Ac2‐26‐treated rats compared to the other experimental groups exposed to IR‐I. Ac2‐26 treatment reduced the levels of the inflammatory cytokines TNF‐α, IL‐1β, ICAM‐1 and NF‐κB‐p65 (P < 0.05) compared to the vehicle‐treated group exposed to IR‐I. In conclusion, the annexin A1 (ANX‐A1) peptidomimetic Ac2‐26 by binding to formyl peptide receptors inhibit inflammatory cytokines and reduce ischaemic‐reperfusion lung injury after cardiopulmonary bypass.
Collapse
Affiliation(s)
- Jiyang Xu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, China
| | - Chengkun Yu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, China
| | - Junli Luo
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yuhan Guo
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, China
| | - Chi Cheng
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, China
| | - Hong Zhang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| |
Collapse
|
13
|
Katsoulis-Dimitriou K, Kotrba J, Voss M, Dudeck J, Dudeck A. Mast Cell Functions Linking Innate Sensing to Adaptive Immunity. Cells 2020; 9:E2538. [PMID: 33255519 DOI: 10.3390/cells9122538] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
Although mast cells (MCs) are known as key drivers of type I allergic reactions, there is increasing evidence for their critical role in host defense. MCs not only play an important role in initiating innate immune responses, but also influence the onset, kinetics, and amplitude of the adaptive arm of immunity or fine-tune the mode of the adaptive reaction. Intriguingly, MCs have been shown to affect T-cell activation by direct interaction or indirectly, by modifying the properties of antigen-presenting cells, and can even modulate lymph node-borne adaptive responses remotely from the periphery. In this review, we provide a summary of recent findings that explain how MCs act as a link between the innate and adaptive immunity, all the way from sensing inflammatory insult to orchestrating the final outcome of the immune response.
Collapse
|
14
|
Vital SA, Senchenkova EY, Ansari J, Gavins FNE. Targeting AnxA1/Formyl Peptide Receptor 2 Pathway Affords Protection against Pathological Thrombo-Inflammation. Cells 2020; 9:cells9112473. [PMID: 33202930 PMCID: PMC7697101 DOI: 10.3390/cells9112473] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/30/2020] [Accepted: 11/04/2020] [Indexed: 12/14/2022] Open
Abstract
Stroke is a leading cause of death and disability globally and is associated with a number of co-morbidities including sepsis and sickle cell disease (SCD). Despite thrombo-inflammation underlying these co-morbidities, its pathogenesis remains complicated and drug discovery programs aimed at reducing and resolving the detrimental effects remain a major therapeutic challenge. The objective of this study was to assess whether the anti-inflammatory pro-resolving protein Annexin A1 (AnxA1) was able to reduce inflammation-induced thrombosis and suppress platelet activation and thrombus formation in the cerebral microvasculature. Using two distinct models of pathological thrombo-inflammation (lipopolysaccharide (LPS) and sickle transgenic mice (STM)), thrombosis was induced in the murine brain using photoactivation (light/dye) coupled with intravital microscopy. The heightened inflammation-induced microvascular thrombosis present in these two distinct thrombo-inflammatory models was inhibited significantly by the administration of AnxA1 mimetic peptide AnxA1Ac2-26 (an effect more pronounced in the SCD model vs. the endotoxin model) and mediated by the key resolution receptor, Fpr2/ALX. Furthermore, AnxA1Ac2-26 treatment was able to hamper platelet aggregation by reducing platelet stimulation and aggregation (by moderating αIIbβ3 and P-selectin). These findings suggest that targeting the AnxA1/Fpr2/ALX pathway represents an attractive novel treatment strategy for resolving thrombo-inflammation, counteracting e.g., stroke in high-risk patient cohorts.
Collapse
Affiliation(s)
- Shantel A. Vital
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA 71130, USA; (S.A.V.); (E.Y.S.); (J.A.)
| | - Elena Y. Senchenkova
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA 71130, USA; (S.A.V.); (E.Y.S.); (J.A.)
| | - Junaid Ansari
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA 71130, USA; (S.A.V.); (E.Y.S.); (J.A.)
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA 71130, USA
| | - Felicity N. E. Gavins
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA 71130, USA; (S.A.V.); (E.Y.S.); (J.A.)
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA 71130, USA
- Department of Life Sciences, Centre for Inflammation Research and Translational Medicine (CIRTM), Brunel University London, Uxbridge, Middlesex UB8 3PH, UK
- Correspondence: ; Tel.: +44-(0)-1895-267151
| |
Collapse
|
15
|
Chen C, Zhang Z, Tan F, Meng F, Lai L, Chi X, Zhu Q. Stabilizing mast cells improves acute lung injury after orthotopic liver transplantation via promotion of apoptosis in polymorphonuclear neutrophils. Am J Physiol Lung Cell Mol Physiol 2020; 320:L266-L275. [PMID: 33174448 DOI: 10.1152/ajplung.00046.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Postoperative pulmonary complications including acute lung injury (ALI) and acute respiratory distress syndrome have contributed to mortality and morbidity of orthotopic liver transplantation (OLT) with unclear mechanisms. Mast cells (MCs) and polymorphonuclear neutrophils (PMNs) are the main inflammatory cells and participants in the process of ALI. The present study was designed to investigate the role of MCs and PMNs and their potential relation to ALI following OLT. Rat orthotopic autologous liver transplantation (OALT) model was designed to determine lung injury at different time points after liver reperfusion. We also evaluated the function of MCs and the effect of tumor necrosis factor-α (TNF-α) and tryptase on ALI and PMN apoptosis in rats subjected to OALT. Histological scores and inflammatory factor levels as well as PMN apoptosis were measured. Rats suffered from ALI after OALT, which was demonstrated by a collapse of the pulmonary architecture, pulmonary edema, and infiltration of inflammatory cells in alveolar and interstitial spaces, as well as increased levels of proinflammatory cytokines. ALI maximized at 8 h after OALT. However, PMN apoptosis lagged behind the pulmonary injury and maximized at 16 h after OALT, when the acute inflammation resolution initiated. MC stabilization, and tryptase and TNF-α inhibitors could significantly decrease the lung pathophysiologic scores accompanied by an increase in PMN apoptosis. ALI after OALT was associated with MC activation and PMN apoptosis. ALI progression might be affected by delayed PMN apoptosis, which was related to MC activation. Induction of PMN apoptosis might alleviate ALI after OALT.
Collapse
Affiliation(s)
- Chaojin Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou City, People's Republic of China
| | - Zheng Zhang
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou City, People's Republic of China
| | - Fang Tan
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| | - Fanbing Meng
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou City, People's Republic of China
| | - Lifei Lai
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| | - Xinjin Chi
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| | - Qianqian Zhu
- Department of Anesthesiology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen City, People's Republic of China
| |
Collapse
|
16
|
Rüger M, Kipp E, Schubert N, Schröder N, Pufe T, Stope MB, Kipp M, Blume C, Tauber SC, Brandenburg LO. The formyl peptide receptor agonist Ac2-26 alleviates neuroinflammation in a mouse model of pneumococcal meningitis. J Neuroinflammation 2020; 17:325. [PMID: 33121515 PMCID: PMC7596991 DOI: 10.1186/s12974-020-02006-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 10/21/2020] [Indexed: 01/20/2023] Open
Abstract
Background Bacterial meningitis is still a cause of severe neurological disability. The brain is protected from penetrating pathogens by the blood-brain barrier and the innate immune system. The invading pathogens are recognized by pattern recognition receptors including the G-protein-coupled formyl peptide receptors (FPRs), which are expressed by immune cells of the central nervous system. FPRs show a broad spectrum of ligands, including pro- and anti-inflammatory ones. Here, we investigated the effects of the annexin A1 mimetic peptide Ac2-26 in a mouse model of pneumococcal meningitis. Methods Wildtype (WT) and Fpr1- and Fpr2-deficient mice were intrathecally infected with Streptococcus pneumoniae D39 (type 2). Subsequently, the different mice groups were treated by intraperitoneal injections of Ac2-26 (1 mg/kg body weight) 2, 8, and 24 h post-infection. The extent of inflammation was analyzed in various brain regions by means of immunohistochemistry and real-time reverse transcription polymerase chain reaction (RT-PCR) 30 h post-infection. Results Ac2-26-treated WT mice showed less severe neutrophil infiltration, paralleled by a reduced induction of pro-inflammatory glial cell responses in the hippocampal formation and cortex. While meningitis was ameliorated in Ac2-26-treated Fpr1-deficient mice, this protective effect was not observed in Fpr2-deficient mice. Irrespective of Ac2-26 treatment, inflammation was more severe in Fpr2-deficient compared to Fpr1-deficient mice. Conclusions In summary, this study demonstrates anti-inflammatory properties of Ac2-26 in a model of bacterial meningitis, which are mediated via FPR2, but not FPR1. Ac2-26 and other FPR2 modulators might be promising targets for the development of novel therapies for Streptococcus pneumoniae-induced meningitis.
Collapse
Affiliation(s)
- Marvin Rüger
- Institute of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9, 18057, Rostock, Germany.,Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany
| | - Eugenia Kipp
- Institute of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9, 18057, Rostock, Germany.,Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany
| | - Nadine Schubert
- Institute of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9, 18057, Rostock, Germany.,Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany
| | - Nicole Schröder
- Institute of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9, 18057, Rostock, Germany.,Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany
| | - Thomas Pufe
- Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany
| | - Matthias B Stope
- Department of Urology, University Medicine Greifswald, Greifswald, Germany.,Department of Gynecology and Obstetrics, University Hospital Bonn, Bonn, Germany
| | - Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9, 18057, Rostock, Germany.,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Gelsheimer Strasse 20, 18147, Rostock, Germany
| | - Christian Blume
- Department of Neurosurgery, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Simone C Tauber
- Department of Neurology, RWTH University Hospital Aachen, Aachen, Germany
| | - Lars-Ove Brandenburg
- Institute of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9, 18057, Rostock, Germany. .,Department of Anatomy and Cell Biology, RWTH Aachen University, Aachen, Germany. .,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Gelsheimer Strasse 20, 18147, Rostock, Germany.
| |
Collapse
|
17
|
Jin J, Xie Y, Shi C, Ma J, Wang Y, Qiao L, Li K, Sun T. Lipoxin A4 Inhibits NLRP3 Inflammasome Activation in Rats With Non-compressive Disc Herniation Through the JNK1/Beclin-1/PI3KC3 Pathway. Front Neurosci 2020; 14:799. [PMID: 33071721 PMCID: PMC7539067 DOI: 10.3389/fnins.2020.00799] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 07/07/2020] [Indexed: 01/05/2023] Open
Abstract
Background Non-compressive disc herniation is induced by an inflammatory response from the nucleus pulposus tissue and nerve roots. Lipoxins (LXs) are important endogenous anti-inflammatory mediators in the body, helping to inhibit neutrophil recruitment and stimulate autophagy in monocytes and macrophages. Here, we investigated the molecular mechanisms underlying the effects of exogenous lipoxin administration on rats with non-compressive disc herniation. Method A non-compressive disc herniation model was established in rats. Fifty rats were randomly divided into: sham group, model group, PI3K inhibitor (LY294002) group, lipoxin A4 group (LXA4), and PI3K inhibitor and lipoxin A4 group (LY294002 + LXA4). Similar groupings were established for rat spinal neurons. Changes in the mechanical pain threshold and thermal pain threshold were monitored at different times. The expression of proinflammatory and anti-inflammatory mediators was assessed by ELISA, while immunohistochemistry was employed to measure the expression levels of NLRP3 and p-JNK1. The expression levels of autophagy-related proteins were measured by western blot. Results In vivo, the pain threshold was markedly decreased in the model group at each time point examined compared with that in sham group. LY294002 treatment further reduced the pain threshold. After LXA4 injection, the pain threshold was significantly increased, and the effect of LY294002 was significantly weakened (p < 0.05). The levels of proinflammatory cytokines were increased in rats with non-compressive disc herniation, and these levels were further increased by LY294002 treatment (p < 0.05). However, treatment with LXA4 significantly reduced the levels of these proinflammatory cytokines in the model group (p < 0.05). The opposite effect was observed for anti-inflammatory mediators. The expression of NLRP3 was largely increased in the model group compared with that in the sham group (p < 0.05). Treatment with LY294002 also increased the NLRP3 expression level, while the administration of LXA4 elicited the opposite effect. Furthermore, western blot analysis showed that the expression of autophagy-related proteins was greatly decreased in the model group, whereas it was significantly increased in the LXA4 group (p < 0.05). The in vitro results were consistent with the outcomes observed in vivo. Conclusions These data suggested that LXA4 inhibited NLRP3 activation in rats with non-compressive disc herniation by regulating the JNK1/beclin-1/PI3KC3 pathway.
Collapse
Affiliation(s)
- Jin Jin
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yonggang Xie
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Cunxian Shi
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Jiahai Ma
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yihao Wang
- Department of Anesthesiology, Qingdao Municipal Hospital, Qingdao, China
| | - Leyan Qiao
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Kezhong Li
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Tao Sun
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| |
Collapse
|
18
|
Quintanilla ME, Ezquer F, Morales P, Ezquer M, Olivares B, Santapau D, Herrera-Marschitz M, Israel Y. N-Acetylcysteine and Acetylsalicylic Acid Inhibit Alcohol Consumption by Different Mechanisms: Combined Protection. Front Behav Neurosci 2020; 14:122. [PMID: 32848653 PMCID: PMC7412547 DOI: 10.3389/fnbeh.2020.00122] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 06/23/2020] [Indexed: 12/20/2022] Open
Abstract
Chronic ethanol intake results in brain oxidative stress and neuroinflammation, which have been postulated to perpetuate alcohol intake and to induce alcohol relapse. The present study assessed the mechanisms involved in the inhibition of: (i) oxidative stress; (ii) neuroinflammation; and (iii) ethanol intake that follow the administration of the antioxidant N-acetylcysteine (NAC) and the anti-inflammatory acetylsalicylic acid (ASA) to animals that had consumed ethanol chronically. At doses used clinically, NAC [40 mg/kg per day orally (p.o.)] and ASA (15 mg/kg per day p.o.) significantly inhibited chronic alcohol intake and relapse intake in alcohol-preferring rats. The coadministration of both drugs reduced ethanol intake by 65% to 70%. N-acetylcysteine administration: (a) induced the Nrf2-ARE system, lowering the hippocampal oxidative stress assessed as the ratio of oxidized glutathione (GSSG)/reduced glutathione (GSH); (b) reduced the neuroinflammation assessed by astrocyte and microglial activation by immunofluorescence; and (c) inhibited chronic and relapse ethanol intake. These effects were blocked by sulfasalazine, an inhibitor of the xCT transporter, which incorporates cystine (precursor of GSH) and extrudes extracellular glutamate, an agonist of the inhibitory mGlu2/3 receptor, which lowers the synaptic glutamatergic tone. The inhibitor of mGlu2/3 receptor (LY341495) blocked the NAC-induced inhibition of both relapse ethanol intake and neuroinflammation without affecting the GSSG/GSH ratio. Unlike N-acetylcysteine, ASA inhibited chronic alcohol intake and relapse via lipoxin A4, a strong anti-inflammatory metabolite of arachidonic acid generated following the ASA acetylation of cyclooxygenases. Accordingly, the lipoxin A4 receptor inhibitor, WRW4, blocked the ASA-induced reduction of ethanol intake. Overall, via different mechanisms, NAC and ASA administered in clinically relevant doses combine their effects inhibiting ethanol intake.
Collapse
Affiliation(s)
- María Elena Quintanilla
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Fernando Ezquer
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Paola Morales
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.,Department of Neuroscience, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Marcelo Ezquer
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Belen Olivares
- Centro de Química Médica, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Daniela Santapau
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Mario Herrera-Marschitz
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Yedy Israel
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| |
Collapse
|
19
|
Martinez RM, Fattori V, Saito P, Pinto IC, Rodrigues CCA, Melo CPB, Bussmann AJC, Staurengo-Ferrari L, Bezerra JR, Vignoli JA, Baracat MM, Georgetti SR, Verri WA Jr, Casagrande R. The Lipoxin Receptor/FPR2 Agonist BML-111 Protects Mouse Skin Against Ultraviolet B Radiation. Molecules 2020; 25:E2953. [PMID: 32604968 DOI: 10.3390/molecules25122953] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 12/30/2019] [Accepted: 01/02/2020] [Indexed: 12/30/2022] Open
Abstract
Excessive exposure to UV, especially UVB, is the most important risk factor for skin cancer and premature skin aging. The identification of the specialized pro-resolving lipid mediators (SPMs) challenged the preexisting paradigm of how inflammation ends. Rather than a passive process, the resolution of inflammation relies on the active production of SPMs, such as Lipoxins (Lx), Maresins, protectins, and Resolvins. LXA4 is an SPM that exerts its action through ALX/FPR2 receptor. Stable ALX/FPR2 agonists are required because SPMs can be quickly metabolized within tissues near the site of formation. BML-111 is a commercially available synthetic ALX/FPR2 receptor agonist with analgesic, antioxidant, and anti-inflammatory properties. Based on that, we aimed to determine the effect of BML-111 in a model of UVB-induced skin inflammation in hairless mice. We demonstrated that BML-111 ameliorates the signs of UVB-induced skin inflammation by reducing neutrophil recruitment and mast cell activation. Reduction of these cells by BML-111 led to lower number of sunburn cells formation, decrease in epidermal thickness, collagen degradation, cytokine production (TNF-α, IL-1β, IL-6, TGF, and IL-10), and oxidative stress (observed by an increase in total antioxidant capacity and Nrf2 signaling pathway), indicating that BML-111 might be a promising drug to treat skin disorders.
Collapse
|
20
|
Boltersdorf T, Ansari J, Senchenkova EY, Groeper J, Pajonczyk D, Vital SA, Kaur G, Alexander JS, Vogl T, Rescher U, Long NJ, Gavins FNE. Targeting of Formyl Peptide Receptor 2 for in vivo imaging of acute vascular inflammation. Theranostics 2020; 10:6599-6614. [PMID: 32550892 PMCID: PMC7295040 DOI: 10.7150/thno.44226] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/19/2020] [Indexed: 12/15/2022] Open
Abstract
Inflammatory conditions are associated with a variety of diseases and can significantly contribute to their pathophysiology. Neutrophils are recognised as key players in driving vascular inflammation and promoting inflammation resolution. As a result, neutrophils, and specifically their surface formyl peptide receptors (FPRs), are attractive targets for non-invasive visualization of inflammatory disease states and studying mechanistic details of the process. Methods: A small-molecule Formyl Peptide Receptor 2 (FPR2/ALX)-targeted compound was combined with two rhodamine-derived fluorescent tags to form firstly, a targeted probe (Rho-pip-C1) and secondly a targeted, pH-responsive probe (Rho-NH-C1) for in vivo applications. We tested internalization, toxicity and functional interactions with neutrophils in vitro for both compounds, as well as the fluorescence switching response of Rho-NH-C1 to neutrophil activation. Finally, in vivo imaging (fluorescent intravital microscopy [IVM]) and therapeutic efficacy studies were performed in an inflammatory mouse model. Results: In vitro studies showed that the compounds bound to human neutrophils via FPR2/ALX without causing internalization at relevant concentrations. Additionally, the compounds did not cause toxicity or affect neutrophil functional responses (e.g. chemotaxis or transmigration). In vivo studies using IVM showed Rho-pip-C1 bound to activated neutrophils in a model of vascular inflammation. The pH-sensitive (“switchable”) version termed Rho-NH-C1 validated these findings, showing fluorescent activity only in inflammatory conditions. Conclusions: These results indicate a viable design of fluorescent probes that have the ability to detect inflammatory events by targeting activated neutrophils.
Collapse
|
21
|
Hebeda CB, Sandri S, Benis CM, de Paula-Silva M, Loiola RA, Reutelingsperger C, Perretti M, Farsky SHP. Annexin A1/Formyl Peptide Receptor Pathway Controls Uterine Receptivity to the Blastocyst. Cells 2020; 9:cells9051188. [PMID: 32403233 PMCID: PMC7291299 DOI: 10.3390/cells9051188] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/22/2020] [Accepted: 04/28/2020] [Indexed: 12/13/2022] Open
Abstract
Embryo implantation into the uterine wall is a highly modulated, complex process. We previously demonstrated that Annexin A1 (AnxA1), which is a protein secreted by epithelial and inflammatory cells in the uterine microenvironment, controls embryo implantation in vivo. Here, we decipher the effects of recombinant AnxA1 in this phenomenon by using human trophoblast cell (BeWo) spheroids and uterine epithelial cells (Ishikawa; IK). AnxA1-treated IK cells demonstrated greater levels of spheroid adherence and upregulation of the tight junction molecules claudin-1 and zona occludens-1, as well as the glycoprotein mucin-1 (Muc-1). The latter effect of AnxA1 was not mediated through IL-6 secreted from IK cells, a known inducer of Muc-1 expression. Rather, these effects of AnxA1 involved activation of the formyl peptide receptors FPR1 and FPR2, as pharmacological blockade of FPR1 or FPR1/FPR2 abrogated such responses. The downstream actions of AnxA1 were mediated through the ERK1/2 phosphorylation pathway and F-actin polymerization in IK cells, as blockade of ERK1/2 phosphorylation reversed AnxA1-induced Muc-1 and claudin-1 expression. Moreover, FPR2 activation by AnxA1 induced vascular endothelial growth factor (VEGF) secretion by IK cells, and the supernatant of AnxA1-treated IK cells evoked angiogenesis in vitro. In conclusion, these data highlight the role of the AnxA1/FPR1/FPR2 pathway in uterine epithelial control of blastocyst implantation.
Collapse
Affiliation(s)
- Cristina B. Hebeda
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo CEP 05508-000, Brazil; (C.B.H.); (S.S.); (C.M.B.); (M.d.P.-S.); (R.A.L.)
| | - Silvana Sandri
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo CEP 05508-000, Brazil; (C.B.H.); (S.S.); (C.M.B.); (M.d.P.-S.); (R.A.L.)
| | - Cláudia M. Benis
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo CEP 05508-000, Brazil; (C.B.H.); (S.S.); (C.M.B.); (M.d.P.-S.); (R.A.L.)
| | - Marina de Paula-Silva
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo CEP 05508-000, Brazil; (C.B.H.); (S.S.); (C.M.B.); (M.d.P.-S.); (R.A.L.)
| | - Rodrigo A. Loiola
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo CEP 05508-000, Brazil; (C.B.H.); (S.S.); (C.M.B.); (M.d.P.-S.); (R.A.L.)
| | - Chris Reutelingsperger
- Faculty of Health, Medicine and Life Sciences, Part of Maastricht University Medical Center, Part of Maastricht University, 6211 LK Maastricht, The Netherlands;
| | - Mauro Perretti
- The William Harvey Research Institute, Queen Mary University of London, London EC1M 6BQ, UK;
| | - Sandra H. P. Farsky
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, São Paulo CEP 05508-000, Brazil; (C.B.H.); (S.S.); (C.M.B.); (M.d.P.-S.); (R.A.L.)
- Correspondence: ; Tel.: +55-(11)-3091-2197
| |
Collapse
|
22
|
Maisto R, Trotta MC, Petrillo F, Izzo S, Cuomo G, Alfano R, Hermenean A, Barcia JM, Galdiero M, Platania CBM, Bucolo C, D'Amico M. Resolvin D1 Modulates the Intracellular VEGF-Related miRNAs of Retinal Photoreceptors Challenged With High Glucose. Front Pharmacol 2020; 11:235. [PMID: 32210819 PMCID: PMC7069219 DOI: 10.3389/fphar.2020.00235] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 02/20/2020] [Indexed: 12/19/2022] Open
Abstract
Stimulation of retinal photoreceptors with elevated glucose concentration (30 mM) for 96 h, served as diabetic retinopathy in vitro model to study Resolvin D1 (50 nM) effects on neovascularization. VEGF and anti-angiogenic miR-20a-3p, miR-20a-5p, miR-106a-5p, and miR-20b expression was assessed either in photoreceptors exposed to HG or in exosomes released by those cells. High glucose increased VEGF levels and concurrently decreased anti-angiogenic miRNAs content in photoreceptors and exosomes. RvD1 reverted the effects of glucose damage in photoreceptors and exosomal pro-angiogenic potential, tested with the HUVEC angiogenesis assay. By activating FPR2 receptor, RvD1 modulated both the expression of anti-angiogenic miRNA, which decrease VEGF, and the pro-angiogenic potential of exosomes released by primary retinal cells. HUVEC transfection with miR-20a-3p, miR-20a-5p, miR-106a-5p, and miR-20b antagomirs, followed by exposure to exosomes from photoreceptors, confirmed the VEGF-related miRNAs mechanism and the anti-angiogenic effects of RvD1.
Collapse
Affiliation(s)
- Rosa Maisto
- Section of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Maria Consiglia Trotta
- Section of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Francesco Petrillo
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Sara Izzo
- Multidisciplinary Department of Surgical and Dental Specialties, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giovanna Cuomo
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Roberto Alfano
- Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anca Hermenean
- Institute of Life Sciences, Vasile Goldis Western University of Arad, Arad, Romania
| | - Jorge Miquel Barcia
- School of Medicine, Catholic University of Valencia "Saint Vicente Martir", Valencia, Spain
| | - Marilena Galdiero
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Chiara Bianca Maria Platania
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Claudio Bucolo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Michele D'Amico
- Section of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| |
Collapse
|
23
|
Kabe Y, Takemoto D, Kanai A, Hirai M, Ono Y, Akazawa S, Horikawa M, Kitagawa Y, Handa H, Rogi T, Shibata H, Suematsu M. Annexin A1 accounts for an anti-inflammatory binding target of sesamin metabolites. NPJ Sci Food 2020; 4:4. [PMID: 32133417 DOI: 10.1038/s41538-020-0064-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/27/2020] [Indexed: 12/16/2022] Open
Abstract
Sesamin [(7α,7'α,8α,8'α)-3,4:3',4'-bis(methylenedioxy)-7,9':7',9-diepoxylignane] is a major lignan in sesame seeds. Sesamin is converted to the catechol metabolite, SC1 [(7α,7'α,8α,8'α)-3',4'-methylenedioxy-7,9':7',9-diepoxylignane-3,4-diol] with anti-inflammatory effects after oral administration. However, its molecular target remains unknown. Analysis using high-performance affinity nanobeads led to the identification of annexin A1 (ANX A1) as an SC1-binding protein. SC1 was found to bind to the annexin repeat 3 region of ANX A1 with a high-affinity constant (Kd = 2.77 μmol L-1). In U937 cells, SC1 exhibited an anti-inflammatory effect dependent on ANX A1. Furthermore, administration of sesamin or SC1 attenuated carbon tetrachloride-induced liver damage in mice and concurrently suppressed inflammatory responses dependent on ANX A1. The mechanism involved SC1-induced ANX A1 phosphorylation at serine 27 that facilitates extracellular ANX A1 release. Consequently, the ANX A1 released into the extracellular space suppressed the production of tumor necrosis factor α. This study demonstrates that ANX A1 acts as a pivotal target of sesamin metabolites to attenuate inflammatory responses.
Collapse
|
24
|
van Thiel IAM, Botschuijver S, de Jonge WJ, Seppen J. Painful interactions: Microbial compounds and visceral pain. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165534. [PMID: 31634534 DOI: 10.1016/j.bbadis.2019.165534] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 12/18/2022]
Abstract
Visceral pain, characterized by abdominal discomfort, originates from organs in the abdominal cavity and is a characteristic symptom in patients suffering from irritable bowel syndrome, vulvodynia or interstitial cystitis. Most organs in which visceral pain originates are in contact with the external milieu and continuously exposed to microbes. In order to maintain homeostasis and prevent infections, the immune- and nervous system in these organs cooperate to sense and eliminate (harmful) microbes. Recognition of microbial components or products by receptors expressed on cells from the immune and nervous system can activate immune responses but may also cause pain. We review the microbial compounds and their receptors that could be involved in visceral pain development.
Collapse
Affiliation(s)
- I A M van Thiel
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, location AMC, Meibergdreef 69, 1105 BK Amsterdam, the Netherlands
| | - S Botschuijver
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, location AMC, Meibergdreef 69, 1105 BK Amsterdam, the Netherlands
| | - W J de Jonge
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, location AMC, Meibergdreef 69, 1105 BK Amsterdam, the Netherlands
| | - J Seppen
- Tytgat Institute for Liver and Intestinal Research, Amsterdam UMC, location AMC, Meibergdreef 69, 1105 BK Amsterdam, the Netherlands.
| |
Collapse
|
25
|
Trotta MC, Pieretti G, Petrillo F, Alessio N, Hermenean A, Maisto R, D'Amico M. Resolvin D1 reduces mitochondrial damage to photoreceptors of primary retinal cells exposed to high glucose. J Cell Physiol 2019; 235:4256-4267. [PMID: 31612492 DOI: 10.1002/jcp.29303] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/30/2019] [Indexed: 01/04/2023]
Abstract
No study has investigated the interaction of Resolvin D1 (RvD1) with mitochondrial damage of retinal cells caused by diabetes. This study aims to investigate the effects of RvD1 (50 nM) on morphological and biochemical indicators of mitochondrial damage in primary retinal cells exposed to 30 mM d-glucose high glucose (HG). HG-cells exhibited photoreceptor damage characterized by short and small mitochondria with prevalent mitochondrial disruption, fragmentation, and aggregation. The cells had low mitochondrial transporters TIMM44 and TOMM40, Connexin 43, NAD/NADH ratio, and ATP levels, whereas increased cytosolic cytochrome c. Moreover, they expressed high cytosolic metalloproteinase matrix metallopeptidase 9 (MMP-9) and MMP-2 activity. HG-cells treated with RvD1 (50 nM) showed reduced reactive oxygen species levels, improved mitochondrial morphology and function, promoted mitochondrial DNA repair by OGG1, and reduced cell apoptosis and metalloproteinase activity. Therefore, RvD1 induces protection from high glucose-load to the retinal cell and promotes their survival by decreasing cytosolic MMP and mitochondrial damage.
Collapse
Affiliation(s)
- Maria Consiglia Trotta
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Gorizio Pieretti
- Multidisciplinary Department of Surgical and Dental Specialties, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Francesco Petrillo
- Department of Ophthalmology, School of Medicine, University of Catania, Catania, Italy
| | - Nicola Alessio
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Anca Hermenean
- Department of Life Science, Vasile Goldis Western University of Arad, Arad, Romania
| | - Rosa Maisto
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Michele D'Amico
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| |
Collapse
|
26
|
Okano M, Oshi M, Butash AL, Katsuta E, Tachibana K, Saito K, Okayama H, Peng X, Yan L, Kono K, Ohtake T, Takabe K. Triple-Negative Breast Cancer with High Levels of Annexin A1 Expression Is Associated with Mast Cell Infiltration, Inflammation, and Angiogenesis. Int J Mol Sci 2019; 20:E4197. [PMID: 31461932 DOI: 10.3390/ijms20174197] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 01/07/2023] Open
Abstract
Annexin A1 (ANXA1) is a phospholipid-linked protein involved in inflammation, immune response, and mast cell reactivity. Recently, we reported that ANXA1 is associated with aggressive features of triple-negative breast cancer (TNBC); however, its clinical relevance remains controversial. We hypothesized that human TNBC with high expression of ANXA1 mRNA is associated with pro-cancerous immune cell infiltration, including mast cells, and with an aggressive phenotype. Clinical and RNA-seq data were obtained from The Cancer Genome Atlas (TCGA, n = 1079) and Molecular Taxonomy of Breast Cancer International Consortium (METABRIC) (n = 1904). TNBC patients had significantly higher levels of ANXA1 expression compared to the other subtypes in both TCGA and METABRIC cohorts (p < 0.001). ANXA1 protein expression was assessed by immunohistochemistry in Japanese TNBC patient cohort (n = 48), where 17 cases (35.4%) had positive ANXA1 staining, and their overall survival was significantly shorter compared with negative staining group (p = 0.008). The CIBERSORT algorithm was used to calculate immune cell infiltrations. ANXA1 high tumors were associated with activated mast cells and M2 macrophages (p > 0.01), but did not show any association with tumor heterogeneity nor cytolytic activity. High expression of ANXA1 group enriched inflammation, epithelial-to-mesenchymal transition (EMT), and angiogenesis-related genes in a gene set enrichment assay in both cohorts. To our knowledge, this is the first study to demonstrate that ANXA1 is associated with infiltration of mast cells and inflammation that is associated with the aggressive phenotype of TNBC, such as EMT and angiogenesis.
Collapse
|
27
|
Contarini G, Franceschini D, Facci L, Barbierato M, Giusti P, Zusso M. A co-ultramicronized palmitoylethanolamide/luteolin composite mitigates clinical score and disease-relevant molecular markers in a mouse model of experimental autoimmune encephalomyelitis. J Neuroinflammation 2019; 16:126. [PMID: 31221190 PMCID: PMC6587257 DOI: 10.1186/s12974-019-1514-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 06/04/2019] [Indexed: 01/31/2023] Open
Abstract
Background Persistent and/or recurrent inflammatory processes are the main factor leading to multiple sclerosis (MS) lesions. The composite ultramicronized palmitoylethanolamide, an endogenous N-acylethanolamine, combined with the flavonoid luteolin, PEALut, have been found to exert neuroprotective activities in experimental models of spinal and brain injury and Alzheimer disease, as well as a clinical improvement in human stroke patients. Furthermore, PEALut enhances the expression of different myelin proteins in oligodendrocyte progenitor cells suggesting that this composite might have protective effects in MS experimental models. Methods The mouse model of experimental autoimmune encephalomyelitis (EAE) based on active immunization with a fragment of myelin oligodendrocyte glycoprotein (MOG35-55) was used. The daily assessment of clinical score and the expression of serum amyloid A (SAA1), proinflammatory cytokines TNF-α, IL-1β, IFN-γ, and NLRP3 inflammasome, as well as TLR2, Fpr2, CD137, CD3-γ, and TCR-ζ chain, heterodimers that form T cell surface glycoprotein (TCR), and cannabinoid receptors CB1, CB2, and MBP, were evaluated in the brainstem and cerebellum at different postimmunization days (PIDs). Results Vehicle-MOG35-55-immunized (MOG35-55) mice developed ascending paralysis which peaked several days later and persisted until the end of the experiment. PEALut, given intraperitoneally daily starting on day 11 post-immunization, dose-dependently improved clinical score over the range 0.1–5 mg/kg. The mRNA expression of SAA1, TNF-α, IL-1β, IFN-γ, and NLRP3 were significantly increased in MOG35-55 mice at 14 PID. In MOG35-55 mice treated with 5 mg /kg PEALut, the increase of SAA1, TNF- α, IL-1β, and IFN-γ transcripts at 14 PID was statistically downregulated as compared to vehicle-MOG35-55 mice (p < 0.05). The expression of TLR2, Fpr2, CD137, CD3-γ, TCR-ζ chain, and CB2 receptors showed a significant upregulation in vehicle-MOG35-55 mice at 14 PID. Instead, CB1 and MBP transcripts have not changed in expression at any time. In MOG/PEALut-treated mice, TLR2, Fpr2, CD137, CD3-γ, TCR-ζ chain, and CB2 mRNAs were significantly downregulated as compared to vehicle MOG35-55 mice. Conclusions The present results demonstrate that the intraperitoneal administration of the composite PEALut significantly reduces the development of clinical signs in the MOG35-55 model of EAE. The dose-dependent improvement of clinical score induced by PEALut was associated with a reduction in transcript expression of the acute-phase protein SAA1, TNF-α, IL-1β, IFN-γ, and NLRP3 proinflammatory proteins and TLR2, Fpr2, CD137, CD3-γ, TCR-ζ chain, and CB2 receptors.
Collapse
Affiliation(s)
- Gabriella Contarini
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Meneghetti, 2, 35131, Padua, Italy
| | - Davide Franceschini
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Meneghetti, 2, 35131, Padua, Italy.,Present address: Selvita S.A. Park Life Science ul., Bobrzyńskiego, 14 30-348, Kraków, Poland
| | - Laura Facci
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Meneghetti, 2, 35131, Padua, Italy
| | - Massimo Barbierato
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Meneghetti, 2, 35131, Padua, Italy
| | - Pietro Giusti
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Meneghetti, 2, 35131, Padua, Italy.
| | - Morena Zusso
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Meneghetti, 2, 35131, Padua, Italy
| |
Collapse
|
28
|
Chen W, Wang Q, Ke Y, Lin J. Neutrophil Function in an Inflammatory Milieu of Rheumatoid Arthritis. J Immunol Res 2018; 2018:8549329. [PMID: 30622982 DOI: 10.1155/2018/8549329] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/31/2018] [Accepted: 11/15/2018] [Indexed: 12/14/2022] Open
Abstract
Rheumatoid arthritis (RA) is an inflammatory autoimmune disease characterized by the presence of autoantibodies against citrullinated protein antigens and proinflammatory cytokines which cause chronic synovitis, bone erosion, and eventual deformity; however, the precise etiology of RA is unclear. In the early stage of RA, neutrophils migrate into the articular cavity, become activated, and exert their function in an inflammatory process, suggesting an essential role of neutrophils in the initial events contributing to the pathogenesis of RA. Solid evidence exists that supports the contribution of neutrophil extracellular traps (NETs) to the production of autoantibodies against citrullinated proteins which can trigger the immune reaction in RA. Concurrently, proinflammatory cytokines regulate the neutrophil migration, apoptosis, and NET formation. As a result, the inflammatory neutrophils produce more cytokines and influence other immune cells thereby perpetuating the inflammatory condition in RA. In this review, we summarize the advances made in improving our understanding of neutrophil migration, apoptosis, and NET formation in the presence of an RA inflammatory milieu. We will also discuss the most recent strategies in modulating the inflammatory microenvironment that have an impact on neutrophil function which may provide alternative novel therapies for RA.
Collapse
|
29
|
Marmorato MP, Gimenes AD, Andrade FEC, Oliani SM, Gil CD. Involvement of the annexin A1-Fpr anti-inflammatory system in the ocular allergy. Eur J Pharmacol 2018; 842:298-305. [PMID: 30419240 DOI: 10.1016/j.ejphar.2018.11.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/01/2018] [Accepted: 11/06/2018] [Indexed: 01/12/2023]
Abstract
Annexin A1 (ANXA1)-formyl peptide receptor (Fpr) system is potent effective mediators in the control of the inflammatory response. In this study, we evaluate the potential involvement of the Fpr family in the protective effect of the mimetic peptide of ANXA1 (ANXA12-26) using an experimental allergic conjunctivitis (AC) model in mice. Ovalbumin (OVA)/Alum-immunized wild-type (WT) and ANXA1-null (ANXA1-/-) Balb/c mice (days 0 and 7) were challenged by eye drops containing OVA on days 14-16, and two groups received ANXA12-26 alone or with Fpr antagonist Boc2 intraperitoneally during challenged days. As expected, plasma IgE anti-OVA levels increased significantly in the OVA-immunized WT and ANXA1-/- mice, supporting the efficacy of AC model. AC increased Fpr1 and Fpr2 levels in the conjunctiva and the lack of endogenous ANXA1 exacerbated Fpr2 expression only. In contrast, administering ANXA12-26 in the WT mice diminished Fpr2 levels in the conjunctiva, and the effect was reverted by Boc2. Ultrastructural analysis showed the co-localization of Fpr2 and ANXA1 in the plasma membrane of mast cells (MCs), eosinophils and neutrophils, supporting this system as being operative in the AC. Boc2 abrogated the ANXA12-26 effect by increasing the MC degranulation and the eosinophil influx in the conjunctiva, and these findings were supported by peroxidase eosinophil, eotaxin and MC protease levels. Additionally, the ANXA12-26-Fpr system in the AC was associated with the activation of ERK and JNK. Collectively, the data provided in vivo supports the anti-allergic effects of the ANXA1-Fpr system and may serve as a therapeutic target in this ocular disorder.
Collapse
Affiliation(s)
- Mariana Prado Marmorato
- UNIFESP - Universidade Federal de São Paulo, Departamento de Morfologia e Genética, São Paulo, SP, Brazil
| | - Alexandre Dantas Gimenes
- UNIFESP - Universidade Federal de São Paulo, Departamento de Morfologia e Genética, São Paulo, SP, Brazil
| | - Frans Eberth Costa Andrade
- UNIFESP - Universidade Federal de São Paulo, Departamento de Morfologia e Genética, São Paulo, SP, Brazil
| | - Sonia Maria Oliani
- UNESP - Universidade Estadual Paulista, Instituto de Biociências, Letras e Ciências Exatas (IBILCE), São José do Rio Preto, SP, Brazil
| | - Cristiane Damas Gil
- UNIFESP - Universidade Federal de São Paulo, Departamento de Morfologia e Genética, São Paulo, SP, Brazil.
| |
Collapse
|
30
|
Yuan W, Hou S, Jia H, Qiu Z, Liu T, Chen X, Li H, Sun Y, Liang L, Sui X, Zhao X, Zhao Z. Ketotifen fumarate attenuates feline gingivitis related with gingival microenvironment modulation. Int Immunopharmacol 2018; 65:159-173. [PMID: 30316074 DOI: 10.1016/j.intimp.2018.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/02/2018] [Accepted: 10/04/2018] [Indexed: 11/17/2022]
Abstract
Gingivitis is evidenced by inflammation of the free gingiva, and still reversible. If left untreated, it may then progress to periodontitis. In the present study, the therapeutical effect of ketotifen fumarate on gingivitis was explored. Domestic cats with varying degrees of gingivitis naturally were enrolled in this study. Subgroups of animals were treated twice daily for one week with or without ketotifen fumarate (5 mg/kg). Effects of ketotifen fumarate were measured on gingival index, cells accumulation, mediators release, receptor-ligand interaction, oxidative stress, MAPK and NF-κB pathways, epithelial barrier and apoptosis. Ketotifen fumarate attenuated the initiation and progression of gingivitis, inhibited the infiltrations of mast cells, B lymphocytes, T lymphocytes, macrophages, neutrophils and eosinophils as well as the release of IgE, β-hexosaminidase, tryptase, chymase, TNF-α, IL-4, and IL-13, influenced endothelial cells, fibroblasts and epithelial cells proliferation and apoptosis, and induced Th2 cells polarization, where ketotifen fumarate also might affect their interactions. Ketotifen fumarate reduced the oxidative stress, and inhibited NF-κB and p38 MAPK related with mast cells and macrophages accumulation. Ketotifen fumarate improved the aberrant expression of ZO-1 and inhibits the following apoptosis. On the other hand, these cells and mediators augmented functional attributes of them involving SCF/c-Kit, α4β7/VCAM-1 and IL-8/IL-8RB interactions, thus creating a positive feedback loop to perpetuate gingivitis, where an inflammation microenvironment was modeled. Our results showed a previously unexplored therapeutic potential of ketotifen fumarate for gingivitis and further suggest that, in addition to biofilms, targeting inflammation microenvironment could be new strategy for the treatment of gingivitis/periodontitis.
Collapse
Affiliation(s)
- Weifeng Yuan
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Shaohua Hou
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Hong Jia
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Zhizhao Qiu
- Meilianzhonghe Animal Hospital, Beijing 100077, People's Republic of China
| | - Tao Liu
- College of Animal Husbandry and Veterinary Medicine, Xinyang Agriculture and Forestry University, Xinyang 464001, People's Republic of China
| | - Xinsheng Chen
- Animal Hospital, Shanghai Wild Animal Park, Shanghai 200120, People's Republic of China
| | - Hongjun Li
- Luoyang Animal Husbandry Station, Luoyang 471002, People's Republic of China
| | - Yanchen Sun
- Yichongtang Animal Hospital, Zhengzhou 450016, People's Republic of China
| | - Lin Liang
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Xiukun Sui
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China
| | - Xinghui Zhao
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China.
| | - Zhanzhong Zhao
- Beijing Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, Beijing 100193, People's Republic of China.
| |
Collapse
|
31
|
Fritscher J, Amberger D, Dyckhoff S, Bewersdorf JP, Masouris I, Voelk S, Hammerschmidt S, Schmetzer HM, Klein M, Pfister HW, Koedel U. Mast Cells Are Activated by Streptococcus pneumoniae In Vitro but Dispensable for the Host Defense Against Pneumococcal Central Nervous System Infection In Vivo. Front Immunol 2018; 9:550. [PMID: 29616039 PMCID: PMC5867309 DOI: 10.3389/fimmu.2018.00550] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 03/05/2018] [Indexed: 01/01/2023] Open
Abstract
Mast cells reside on and near the cerebral vasculature, the predominant site of pneumococcal entry into the central nervous system (CNS). Although mast cells have been reported to be crucial in protecting from systemic bacterial infections, their role in bacterial infections of the CNS remained elusive. Here, we assessed the role of mast cells in pneumococcal infection in vitro and in vivo. In introductory experiments using mouse bone marrow-derived mast cells (BMMC), we found that (i) BMMC degranulate and release selected cytokines upon exposure to Streptococcus pneumoniae, (ii) the response of BMMC varies between different pneumococcal serotypes and (iii) is dependent on pneumolysin. Intriguingly though, apart from a slight enhancement of cerebrospinal fluid (CSF) pleocytosis, neither two different mast cell-deficient Kit mutant mouse strains (WBB6F1-KitW/Wv and C57BL/6 KitW-sh/W-sh mice) nor pharmacologic mast cell stabilization with cromoglycate had any significant impact on the disease phenotype of experimental pneumococcal meningitis. The incomplete reversal of the enhanced CSF pleocytosis by local mast cell engraftment suggests that this phenomenon is caused by other c-Kit mutation-related mechanisms than mast cell deficiency. In conclusion, our study suggests that mast cells can be activated by S. pneumoniae in vitro. However, mast cells do not play a significant role as sentinels of pneumococcal CSF invasion and initiators of innate immunity in vivo.
Collapse
Affiliation(s)
- Johanna Fritscher
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Daniel Amberger
- Department of Internal Medicine III (Oncology), University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Susanne Dyckhoff
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Jan Philipp Bewersdorf
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Ilias Masouris
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Stefanie Voelk
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Sven Hammerschmidt
- Department of Molecular Genetics and Infection Biology, Interfaculty Institute for Genetics and Functional Genomics, Center for Functional Genomics of Microbes, Ernst Moritz Arndt University Greifswald, Greifswald, Germany
| | - Helga Maria Schmetzer
- Department of Internal Medicine III (Oncology), University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Matthias Klein
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Hans-Walter Pfister
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Uwe Koedel
- Department of Neurology, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| |
Collapse
|
32
|
Abstract
The anti-allergic cromones were originally synthesized in the 1960s by Fisons Plc, and the first drug to emerge from this program, disodium cromoglycate was subsequently marketed for the treatment of asthma and other allergic conditions. Whilst early studies demonstrated that the ability of the cromones to prevent allergic reactions was due to their 'mast cell stabilizing' properties, the exact pharmacological mechanism by which this occurred, remained a mystery. Here, we briefly review the history of these drugs, recount some aspects of their pharmacology, and discuss two new explanations for their unique actions. We further suggest how these findings could be used to predict further uses for the cromones.
Collapse
Affiliation(s)
- Ajantha Sinniah
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Samia Yazid
- Trio Medicines Ltd., Hammersmith Medicines Research, London, United Kingdom
| | - Roderick J Flower
- Centre for Biochemical Pharmacology, William Harvey Research Institute, St Barts and the Royal London School of Medicine, Queen Mary University of London, London, United Kingdom
| |
Collapse
|
33
|
Hughes EL, Becker F, Flower RJ, Buckingham JC, Gavins FNE. Mast cells mediate early neutrophil recruitment and exhibit anti-inflammatory properties via the formyl peptide receptor 2/lipoxin A 4 receptor. Br J Pharmacol 2017; 174:2393-2408. [PMID: 28471519 DOI: 10.1111/bph.13847] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE In recent years, studies have focused on the resolution of inflammation, which can be achieved by endogenous anti-inflammatory agonists such as Annexin A1 (AnxA1). Here, we investigated the effects of mast cells (MCs) on early LPS-induced neutrophil recruitment and the involvement of the AnxA1-formyl peptide receptor 2/ALX (FPR2/ALX or lipoxin A4 receptor) pathway. EXPERIMENTAL APPROACH Intravital microscopy (IVM) was used to visualize and quantify the effects of LPS (10 μg per mouse i.p.) on murine mesenteric cellular interactions. Furthermore, the role that MCs play in these inflammatory responses was determined in vivo and in vitro, and effects of AnxA1 mimetic peptide Ac2-26 were assessed. KEY RESULTS LPS increased both neutrophil endothelial cell interactions within the mesenteric microcirculation and MC activation (determined by IVM and ruthenium red dye uptake), which in turn lead to the early stages of neutrophil recruitment. MC recruitment of neutrophils could be blocked by preventing the pro-inflammatory activation (using cromolyn sodium) or enhancing an anti-inflammatory phenotype (using Ac2-26) in MCs. Furthermore, MCs induced neutrophil migration in vitro, and MC stabilization enhanced the release of AnxA1 from neutrophils. Pharmacological approaches (such as the administration of FPR pan-antagonist Boc2, or the FPR2/ALX antagonist WRW4) revealed neutrophil FPR2/ALX to be important in this process. CONCLUSIONS AND IMPLICATIONS Data presented here provide evidence for a role of MCs, which are ideally positioned in close proximity to the vasculature, to act as sentinel cells in neutrophil extravasation and resolution of inflammation via the AnxA1-FPR2/ALX pathway.
Collapse
Affiliation(s)
- Ellen L Hughes
- Centre for Brain Sciences, Department of Medicine, Imperial College London, London, W12 0NN, UK
| | - Felix Becker
- Department for General and Visceral Surgery, University Hospital Muenster, 48149, Muenster, Germany
| | - Roderick J Flower
- Centre of Biochemical Pharmacology, Queen Mary University, London, EC1V 3AJ, UK
| | | | - Felicity N E Gavins
- Centre for Brain Sciences, Department of Medicine, Imperial College London, London, W12 0NN, UK.,Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Centre Shreveport, Shreveport, LA, 71130, USA
| |
Collapse
|